Tool-holder for lathes.



C. F. WAITE.

TOOL HOLDER FOR LATHES. APPLICATION FILED FEB.7.1914.

1,158,753. Patented Nov. 2, 1915.

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BY v ATTORN? COLUMBIA PLANOGRAPH C0..WASHINGTON. D. r

' C. F. WAITE.

TOOL HOLDER FOR LATHES.

APPLICATION FILED FEB- 7. 1914.

1 ,1 158,75 3 Patented Nov. 2, 1915.

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v 7% ATTORNZZO CIILUMBIA Fuwoamn CO-IVIASHINGTON. D. c.

CHARLES F. WAITE, 0F CAMBRIDGE, MASSACHUSETTS.

TOOIJ'HOLDER FOR LATI-IES.

Specification of Letters Patent.

Patented Nov. 2, 1915.

Application filed February 7, 1914. Serial No. 817,330.

To all whom it may concern l Be it known that 1, CHARLES F. WAITE, a citizen of the United States, and a resident of Cambridge, in the county of Middlesex and State of Massachusetts, have'invented an Improvement in Tool-Holders for Lathes, of which the following description, in connection withthe accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to a novel tool holder for use on lathes of ordinary construction, and has for its object to provide a simple and eflicient tool holder, which can be applied to an ordinary lathe and enable the work to be cut,ground, bored or otherwise treated on any angle desired or required, therebyenabling a class of work to be performed on a lathe of ordinary construction, which can not now be performed on such lathe. To this end, the improved tool holder has provision for engagement with the tool post on the carriage of the ordinary lathe, and also has provision for enabling it to be turned or swiveled" in an are or circle concentric with the said tool post, so as to present the tool to the work at any angle desired or required, and when properly positioned to be fed longitudinally of the work, as will be'described. Provision may and preferably will be made for obtaining adjustment of the tool in a plane perpendicular to the plane in which the tool holder is rotatable, 7

These and other features of this invention will be pointed out in the claims at the end of this specification. a

Figure 1 is a plan of a portionof alathe provided with a tool holder embodying this invention. Fig.2, an end elevation of the tool holder and a portion of the carriage. Fig. 3, a plan of the tool holder on a larger scale, and Fig. 4: 11, face view of the tool holder looking in the directionof the arrow inFig.3.'

Referring to'the drawing a represents a lathe of ordinary construction, such as now commonly found in machine shops, and which is provided with the usual work holder or chuck b, the main tool carriage 0 movable longitudinally toward and from the work holder 6 by turning the handle d, and the auxiliary carriage e which supports the tool post f and which is movable onthemain carriage transversely of the'lathe; The 15001 post 7 is provided with a slot 10, through which the ordinary tool (not shown) is inserted andsecured in fixed relation to said post.

The present invention has for its object to .provide a lathe ofthe character described, and which may be termed an ordinary lathe,

by screws 14 which extend down through the vertical slot 15 inthe carriage e and en- 7 gage clips or holding bars 17 which are located in the horizontal slot 18 in the carriage e and engage the upper wall thereof. The base plate 12 is provided with countersinks for the heads'of the screws 14.

The baseplate 12 is provided on its upper surface with a circular recess for the reception of a circular flange 21 on the under surface of a circular disk 22, which is capable of being rotated or turned on the base plate 12 and which is provided with a central opening for the passage of the tool post 7. The disk 22 constitutes a rotatable support for the tool holder,which is preferably constructed as herein shown, and which comprises two members25, 26 in sliding engage ment with each other and which may be designated the stationary and movable members of the tool holder. The stationary member 25 is provided on its front face with a dovetailed rib or key 27 which fits into a dovetailed slot in the back face of the movable member 26, and the latter is provided with a longitudinally extended threaded socket for the reception of a thread rod or screw 29, mounted to turn in plate 30 secured to the end of the stationary member 25, and provided with a handle 31, by turning which the member 26 may be moved longitudinally with relation to member 25. V

The tool 33 is herein shown as a cutting tool, but may be of any other form according to the character of the work to be performed, such for instance as a grinding tool, or a boring tool. The tool 33 may be secu d directly to the member 26, but it 1s preferred to secure it, as by thescrew 34, to an auxiliary member.35, which'is adjustably secured to the member 26, so as to'provide for adjustment of the tool with relation to the work in a plane or direction transversely to the member 26, so that the ;t ool may be to effect longitudinal movement of themov- --able-me nber--2 6 of the tool holder with re-. lation to the stationary membenand therebyicauselthe tool to travel in the dlrection raised and lowered with relation to the-of the length of the work in a path which work. In the present instance, the auxiliary member is shown as an angle barhaving one arm 38 in contact with the front face of the movable member 26 and its other arm 39 incontact with the end of the movable member 26, and to provide for the vertical adjustment of the auxiliary 'member 35, the latter is provided with a slot 40 through which is extended aset screw 41. To insure fixed relation between the movablemember 26 and the auxiliary member 85 in the adjusted positions of the latter, the movable member 26 is provided on its front face wlth a plurality of parallel teeth or projections 42, which engage with like teeth on the rear face of the arm 38 of the movable member, and prevent movement of the auxiliary member with relation to the movable member when the screw 41 is set up.

' tool post f and to rest on the rotatable disk 22, and is positioned on said disk by two sets of substantially parallel lugs 47, between which the arm 44 is located, see

Fig. 8, said pairs of lugs being located on the disk 22 on opposite sides of the center opening'through which the toolpost f pro- 'ects.'

J The baseplate 12 may be, provided on one side of its upper surface with a series of radial lines 50, which form a scale ,to indicate various angles, and. with which a mark 51 on the disk 22 cooperates, to posi- 'tion the tool; at the proper or desired angle with relation to the work.

In operation with the tool holder herein shown, the base plate 12 is fitted over the toolpost 7 and is squared with relation to the chuck 6,, after which it is secured in fixed relationto the carriage eby the clips 17 and screws 14. The tool hoider is then aflixed to the rotatable disk or support 22, by extending its arm 44 through the slot 10 in the tool post and fitting said arm between the lugs 47 on the disk 22, and turning the screw 60 until the arm '44 is firmly clamped between the screw 60 and the disk 22. The tool holder is then rotated or turned, until the tool 33 is presented at the V proper or desired angle to the work, which may be made known by the scale 50 on the base plate 12 with which the mark'51 on the disk 22 cooperates. The tool having been properly positioned with relation to the j maybe parallel with the work or atan angle thereto, and thus enable a class of work to "be done 'on a l'athe of ordinary construc tion, which new equires, a sp cially bu lathe to perform;

In the present instance show I construction embodying the invent on but it is not desired tq limitl the invention to the particular construction Shown... X cpt a efi ed, y aim 5" a a "1 Claims: "1

In a la e, in combin n; ar a e movable lengthwise of theflathe, tool post mounted toturn on said carriage and-provided with a slot, abase plate fitted over said tool post and securedinfixedrelation to said carriage, a disk'fitted-over said tool post and mounted on saidbase plate to turn ary member' provided with an arm which is "extended into the slot in said tool post, and a tool carrying; member movable on saidstationary member in the direction of the length of said stationary member, means extended into; thejslot of said tool post and secured to said disk to rotate therewith and provided with a movable tool carryingmemher, and means for moving said tool carrying Inember' in the directionof its length independently of saidcarriage. i

3. Ina lathe, in'combination, a' carriage movable lengthwise of the lathe, a, tool post mounted to turn on said carriage, a base plate secured in fixed relation to said carriage and through which thetool post is'extended, a disk fitted overthe s'ai dtool post, and rotatably mounted on said'base plate, and a tool'holder having a membersupported said disk to revolve therewith and detachably secured thereto, and having atool carrying member movable ion the first imen tioned member in the direction of thelength thereof, means carried by the first mentioned member for effecting longitudinal movement thereon, a tool'holder comprising a station- :10!) said disk and tool post, substantially as .de-

are

of the tool carrying member, and means carried by the tool post for securing the tool holder to the said disk, substantially as described.

4. In a tool holder of thecharacter described, in combination, a stationary member having attached to it a substantially parallel arm for engagement with the slotted tool post of an ordinary lathe, a tool holding member in sliding engagement with the stationary member, and provided with a series of substantially parallel teeth, an auxiliary movable tool holding member provided with a series of substantially parallel teeth to engage the teeth on the main movable tool holding member, means for securing said main and auxiliary movable members in fixed relation, and a feed mechanism for the movable tool holding members carried by said stationary member.

5. In a tool holder of the character de' scribed, in combination, a stationary mem her provided with an arm extended sub stantially parallel therewith for engagement with the slotted tool post of an ordinary lathe, a main movable tool holding member mounted to slide on said stationary member, an auxiliary tool holding member adj ustably secured to said main movable member to move in a plane substantially at right angles to that in which the main movable member is moved on said stationary member, and means carried by said stationary member for efiecting longitudinal movement of the tool holding members, substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES F. WAITE. Witnesses:

JAs. H. CHURCHILL, J. MURPHY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

